//==========================================================================
// Copyright (c) 2000-2008,  Elastos, Inc.  All Rights Reserved.
//==========================================================================

/* $NetBSD: ieeefp.h,v 1.1 2001/01/10 19:02:06 bjh21 Exp $ */
/* $FreeBSD: /repoman/r/ncvs/src/sys/arm/include/ieeefp.h,v 1.2 2005/01/05 21:58:48 imp Exp $ */
/*-
 * Based on ieeefp.h written by J.T. Conklin, Apr 28, 1995
 * Public domain.
 */

#ifndef _MACHINE_IEEEFP_H_
#define _MACHINE_IEEEFP_H_

/* FP exception codes */
#define FP_EXCEPT_INV 0
#define FP_EXCEPT_DZ 1
#define FP_EXCEPT_OFL 2
#define FP_EXCEPT_UFL 3
#define FP_EXCEPT_IMP 4

/* Exception type (used by fpsetmask() et al.) */

typedef int fp_except;

/* Bit defines for fp_except */

#define FP_X_INV (1 << FP_EXCEPT_INV) /* invalid operation exception */
#define FP_X_DZ  (1 << FP_EXCEPT_DZ) /* divide-by-zero exception */
#define FP_X_OFL (1 << FP_EXCEPT_OFL) /* overflow exception */
#define FP_X_UFL (1 << FP_EXCEPT_UFL) /* underflow exception */
#define FP_X_IMP (1 << FP_EXCEPT_IMP) /* imprecise (loss of precision; "inexact") */

/* Rounding modes */

typedef enum {
    FP_RN=0,   /* round to nearest representable number */
    FP_RP=1,   /* round toward positive infinity */
    FP_RM=2,   /* round toward negative infinity */
    FP_RZ=3   /* round to zero (truncate) */
} fp_rnd_t;

/*
 * FP precision modes
 */
typedef enum {
    FP_PS=0, /* 24 bit (single-precision) */
    FP_PRS,  /* reserved */
    FP_PD,  /* 53 bit (double-precision) */
    FP_PE  /* 64 bit (extended-precision) */
} fp_prec_t;

#define fp_except_t int

#endif /* _MACHINE_IEEEFP_H_ */
